There a re a few heuristics for German that are very useful. I had this problem myself and researched it deeply in this article (full disclosure: own website)

There a re a few heuristics for German that are very useful. I had this problem myself and researched it deeply in this article (full disclosure: own website) https://mejuto.co/statistical-grammar-guessing-a-german-nouns-gender/ https://mejuto.co/statistical-grammar-guessing-a-german-noun...